/Engine/Source/Runtime/Engine/Classes/PhysicsEngine/LevelSetElem.h
Get geometry of all cell faces where level set function changes sign
void GetZeroIsosurfaceGridCellFaces ( [TArray](API\Runtime\Core\Containers\TArray)< FVector3f > & Vertices, [TArray](API\Runtime\Core\Containers\TArray)< FIntVector > & Tris ) const